A question for the ladies. But if there are any gents with some valuable insights, please chime in.

Me and my girlfriend like to indulge in some chemsex every now and again. Usually we do 3mmc and we really enjoy those evenings. My girlfriend isn't able to cum while doing stims. I know this is fairly common of course and due to vasoconstriction.
But my former girlfriend was able to cum multiple times while we were doing drugs. Maybe even easier than sober.

I know my girlfriend doesn't mind because we have a hot and horny night any way. But I really enjoy getting her off...
So the question is, are there ways to make it easier for a woman to cum while high on stims??